-
Check if service is running:
systemctl status firewalld● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2016-09-19 07:59:20 BST; 1 weeks 2 days ago
Main PID: 960 (firewalld) Memory: 24.1M CGroup: /system.slice/firewalld.service └─960 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
In this case active/running see **active (running)**
- Disable RHEL 7 firewalld service
systemctl stop firewalld
and check the status
systemctl status firewalld
This is usefull in case of testing VM port binding (in this case *nginx to port 80*)
> Links: [how-to-stop-start-and-disable-enable-firewall-on-redhat-7-linux-system](https://linuxconfig.org/how-to-stop-start-and-disable-enable-firewall-on-redhat-7-linux-system)
## Disable selinux temporalily
echo 0 > /selinux/enforce
Will remain switched off until next reboot.
## Disable selinux pernamently
vim /etc/sysconfig/selinux
SELINUX=disabled
Than restart the server.
Check:
sestatus
Should look like
SELinux status: disabled
> Links: [http://www.tecmint.com/disable-selinux-temporarily-permanently-in-centos-rhel-fedora/] (http://www.tecmint.com/disable-selinux-temporarily-permanently-in-centos-rhel-fedora/)
## Change security limits
In case we need to change the default values for num. of opened processes, files etc.
vim /etc/security/limits.conf
e.g (TODO add desctiption)
-
hard nofile 65536 -
soft nofile 65536 -
hard nproc 10000 -
soft nproc 10000